Jesus never asked or required his priests/apostles/disciples to be celibate. In fact, St. Peter was married as Jesus cured Peter's mother-in-law.
There are probably many men out there who would make good priests, but celibacy is a strong and unrealistic burden. This is a man-made law, not God-made. If anyone is Catholic out there, remember when we could not eat meat on Friday? I can't remember if that was a mortal or venial sin--but now it's okay.
God is shaking up the Catholic Church and that's very good.
Married life is also a burden for clergymen. In the Greek Church, which allows married men to become priests, only 30% of the clergy are married. After all, you are asking the wife and children to share his life of genteel poverty.